diff --git a/frontend/ui/widget/dictquicklookup.lua b/frontend/ui/widget/dictquicklookup.lua
index 73d35a77a..576eec263 100644
--- a/frontend/ui/widget/dictquicklookup.lua
+++ b/frontend/ui/widget/dictquicklookup.lua
@@ -67,8 +67,13 @@ local DictQuickLookup = InputContainer:extend{
     window_list = {},
     -- Static class member, used by ReaderWiktionary to communicate state from a closed widget to the next opened one.
     rotated_update_wiki_languages_on_close = nil,
+
+    _is_temporary_large_window = false,
 }
 
+-- Static variable to hold request data for temporary fullscreen
+DictQuickLookup.temp_large_window_request = nil
+
 function DictQuickLookup.getWikiSaveEpubDefaultDir()
     local dir = G_reader_settings:readSetting("home_dir") or filemanagerutil.getDefaultDir()
     if dir:sub(-1) ~= "/" then
@@ -193,6 +198,12 @@ function DictQuickLookup:init()
                     end
                 end
             },
+            SetTemporaryLargeWindowMode = {
+                GestureRange:new{
+                    ges = "spread",
+                    range = range,
+                },
+            },
             -- These will be forwarded to MovableContainer after some checks
             ForwardingTouch = { GestureRange:new{ ges = "touch", range = range, }, },
             ForwardingPan = { GestureRange:new{ ges = "pan", range = range, }, },
@@ -200,10 +211,17 @@ function DictQuickLookup:init()
         }
     end
 
+    self.temp_large_window = DictQuickLookup.temp_large_window_request and DictQuickLookup.temp_large_window_request.is_large_window == true
+
     -- We no longer support setting a default dict with Tap on title.
     -- self:changeToDefaultDict()
-    -- Now, dictionaries can be ordered (although not yet per-book), so trust the order set
-    self:changeDictionary(1, true) -- don't call update
+    if DictQuickLookup.temp_large_window_request and DictQuickLookup.temp_large_window_request.dict_index then
+        self:changeDictionary(DictQuickLookup.temp_large_window_request.dict_index, true)
+        DictQuickLookup.temp_large_window_request.dict_index = nil
+        self._is_temporary_large_window = true
+    else
+        self:changeDictionary(1, true) -- don't call update
+    end
 
     -- And here comes the initial widget layout...
     if self.is_wiki then
@@ -214,7 +232,7 @@ function DictQuickLookup:init()
 
     -- Bigger window if fullpage Wikipedia article being shown,
     -- or when large windows for dict requested
-    local is_large_window = self.is_wiki_fullpage or G_reader_settings:isTrue("dict_largewindow")
+    local is_large_window = self.is_wiki_fullpage or G_reader_settings:isTrue("dict_largewindow") or self.temp_large_window
     if is_large_window then
         self.width = Screen:getWidth() - 2*Size.margin.default
     else
@@ -769,6 +787,7 @@ function DictQuickLookup:registerKeyEvents()
             local modifier = Device:hasScreenKB() and "ScreenKB" or "Shift"
             self.key_events.ChangeToPrevDict = { { modifier, Input.group.PgBack } }
             self.key_events.ChangeToNextDict = { { modifier, Input.group.PgFwd } }
+            self.key_events.SetTemporaryLargeWindowMode = { { modifier, "Home" } }
             self.key_events.StartOrUpTextSelectorIndicator   = { { modifier, "Up" },   event = "StartOrMoveTextSelectorIndicator", args = { 0, -1, true } }
             self.key_events.StartOrDownTextSelectorIndicator = { { modifier, "Down" }, event = "StartOrMoveTextSelectorIndicator", args = { 0,  1, true } }
             self.key_events.FastLeftTextSelectorIndicator  = { { modifier, "Left" },  event = "MoveTextSelectorIndicator", args = { -1, 0, true } }
@@ -983,6 +1002,36 @@ function DictQuickLookup:update()
     end)
 end
 
+function DictQuickLookup:onSetTemporaryLargeWindowMode()
+    self:setTemporaryLargeWindowMode()
+    return true
+end
+
+function DictQuickLookup:setTemporaryLargeWindowMode()
+    if self.temp_large_window then return false end
+    if self.is_wiki_fullpage or G_reader_settings:isTrue("dict_largewindow") then return false end
+
+    -- Remove ourselves from window_list before creating the new instance, onHoldClose won't like it if we still exist.
+    for i = #DictQuickLookup.window_list, 1, -1 do
+        if DictQuickLookup.window_list[i] == self then
+            table.remove(DictQuickLookup.window_list, i)
+            break
+        end
+    end
+    -- We want to remember the current dict_index (e.g. 5/7), so that it can be restored later.
+    DictQuickLookup.temp_large_window_request = {
+        dict_index = self.dict_index,
+        is_large_window = true, -- note: any would-be child window will also open in fullscreen mode.
+    }
+    -- Re-trigger the lookup, and close this instance _after_ the new one is created.
+    if self.is_wiki then
+        self.ui:handleEvent(Event:new("LookupWikipedia", self.word, self.is_sane_word, self.word_boxes, false, self.lang, function() self:onClose(true) end))
+    else
+        self.ui:handleEvent(Event:new("LookupWord", self.word, true, self.word_boxes, self.highlight, nil, function() self:onClose(true) end))
+    end
+    return true
+end
+
 function DictQuickLookup:getInitialVisibleArea()
     -- Some positioning happens only at paintTo() time, but we want
     -- to know this before. So, do a bit like WidgetContainer does
@@ -1227,6 +1276,10 @@ function DictQuickLookup:onClose(no_clear)
 
     UIManager:close(self)
 
+    if self._is_temporary_large_window then
+        DictQuickLookup.temp_large_window_request = nil
+    end
+
     if self.update_wiki_languages_on_close then
         -- except if we got no result for current language
         if not self.results.no_result then